"There 's trouble on Cucúlin," said Fin.
"Chew your thumb," said Conan Maol, "to know what 's on him."
Fin chewed his thumb, and said, "Cucúlin is after killing his own son, and if I and all my men were to face him before his passion cools, at the end of seven days, he 'd destroy every man of us."
"Go now," said Conan, "and bind him to go down to Bale strand and give seven days' fighting against the waves of the sea, rather than kill us all."
So Fin bound him to go down. When he went to Bale strand Cucúlin found a great white stone. He grasped his sword in his right hand and cried out: "If I had the head of the woman who sent her son into peril of death at my hand, I 'd split it as I split this stone," and he made four quarters of the stone. Then he strove with the waves seven days and nights till he fell from hunger and weakness, and the waves went over him.